Delete ClassHelper and fix compaction bug in GetDirectInterface

Cleanup helps to prevent compaction bugs. Fixed a fairly serious
compaction error caused by calling ClassHelper::GetDirectInterface
without handling the case where it causes thread suspension due to
ResolveType.

Bug: 8981901

Change-Id: I82b3bb6dd48d21eb6ece7aae0733c4a23c2bc408
diff --git a/runtime/interpreter/interpreter.cc b/runtime/interpreter/interpreter.cc
index 20e2b8d..478c74c 100644
--- a/runtime/interpreter/interpreter.cc
+++ b/runtime/interpreter/interpreter.cc
@@ -49,7 +49,8 @@
     value.SetJ((static_cast<uint64_t>(args[1]) << 32) | args[0]);
     result->SetD(log(value.GetD()));
   } else if (name == "java.lang.String java.lang.Class.getNameNative()") {
-    result->SetL(receiver->AsClass()->ComputeName());
+    StackHandleScope<1> hs(self);
+    result->SetL(mirror::Class::ComputeName(hs.NewHandle(receiver->AsClass())));
   } else if (name == "int java.lang.Float.floatToRawIntBits(float)") {
     result->SetI(args[0]);
   } else if (name == "float java.lang.Float.intBitsToFloat(int)") {
diff --git a/runtime/interpreter/interpreter_common.cc b/runtime/interpreter/interpreter_common.cc
index c5fb0d8..418aff5 100644
--- a/runtime/interpreter/interpreter_common.cc
+++ b/runtime/interpreter/interpreter_common.cc
@@ -117,8 +117,8 @@
                                        "Ljava/lang/VirtualMachineError;",
                                        "Invoking %s with bad arg %d, type '%s' not instance of '%s'",
                                        mh.GetName(), shorty_pos,
-                                       ClassHelper(o->GetClass()).GetDescriptor(),
-                                       ClassHelper(arg_type).GetDescriptor());
+                                       o->GetClass()->GetDescriptor().c_str(),
+                                       arg_type->GetDescriptor().c_str());
               return false;
             }
           }
diff --git a/runtime/interpreter/interpreter_common.h b/runtime/interpreter/interpreter_common.h
index 9b03334..0c7c8a9 100644
--- a/runtime/interpreter/interpreter_common.h
+++ b/runtime/interpreter/interpreter_common.h
@@ -345,9 +345,9 @@
           self->ThrowNewExceptionF(self->GetCurrentLocationForThrow(),
                                    "Ljava/lang/VirtualMachineError;",
                                    "Put '%s' that is not instance of field '%s' in '%s'",
-                                   ClassHelper(reg->GetClass()).GetDescriptor(),
-                                   ClassHelper(field_class).GetDescriptor(),
-                                   ClassHelper(f->GetDeclaringClass()).GetDescriptor());
+                                   reg->GetClass()->GetDescriptor().c_str(),
+                                   field_class->GetDescriptor().c_str(),
+                                   f->GetDeclaringClass()->GetDescriptor().c_str());
           return false;
         }
       }
diff --git a/runtime/interpreter/interpreter_goto_table_impl.cc b/runtime/interpreter/interpreter_goto_table_impl.cc
index 5b7dee1d..e0f9e5f 100644
--- a/runtime/interpreter/interpreter_goto_table_impl.cc
+++ b/runtime/interpreter/interpreter_goto_table_impl.cc
@@ -342,8 +342,8 @@
         self->ThrowNewExceptionF(self->GetCurrentLocationForThrow(),
                                  "Ljava/lang/VirtualMachineError;",
                                  "Returning '%s' that is not instance of return type '%s'",
-                                 ClassHelper(obj_result->GetClass()).GetDescriptor(),
-                                 ClassHelper(return_type).GetDescriptor());
+                                 obj_result->GetClass()->GetDescriptor().c_str(),
+                                 return_type->GetDescriptor().c_str());
         HANDLE_PENDING_EXCEPTION();
       }
     }
@@ -614,7 +614,7 @@
       self->ThrowNewExceptionF(self->GetCurrentLocationForThrow(),
                                "Ljava/lang/VirtualMachineError;",
                                "Throwing '%s' that is not instance of Throwable",
-                               ClassHelper(exception->GetClass()).GetDescriptor());
+                               exception->GetClass()->GetDescriptor().c_str());
     } else {
       self->SetException(shadow_frame.GetCurrentLocationForThrow(), exception->AsThrowable());
     }
diff --git a/runtime/interpreter/interpreter_switch_impl.cc b/runtime/interpreter/interpreter_switch_impl.cc
index 859cfc4..c1d24f5 100644
--- a/runtime/interpreter/interpreter_switch_impl.cc
+++ b/runtime/interpreter/interpreter_switch_impl.cc
@@ -258,8 +258,8 @@
             self->ThrowNewExceptionF(self->GetCurrentLocationForThrow(),
                                      "Ljava/lang/VirtualMachineError;",
                                      "Returning '%s' that is not instance of return type '%s'",
-                                     ClassHelper(obj_result->GetClass()).GetDescriptor(),
-                                     ClassHelper(return_type).GetDescriptor());
+                                     obj_result->GetClass()->GetDescriptor().c_str(),
+                                     return_type->GetDescriptor().c_str());
             HANDLE_PENDING_EXCEPTION();
           }
         }
@@ -528,7 +528,7 @@
           self->ThrowNewExceptionF(self->GetCurrentLocationForThrow(),
                                    "Ljava/lang/VirtualMachineError;",
                                    "Throwing '%s' that is not instance of Throwable",
-                                   ClassHelper(exception->GetClass()).GetDescriptor());
+                                   exception->GetClass()->GetDescriptor().c_str());
         } else {
           self->SetException(shadow_frame.GetCurrentLocationForThrow(), exception->AsThrowable());
         }